Universal aerator



FIG. 1 is a top perspective view;

FIG. 2 is a bottom perspective view;

FIG. 3 is a front elevation view;

FIG. 4 is a top plan view; and,

FIG. 5 is a bottom plan view.

The left side, right side and rear elevation views are the same as the front elevation view. 

The ornamental design for a universal aerator, as shown and described. 